hurricane faced by this region since 1991. and linsey davis has been on cape cod to tell us how they're preparing. >> reporter: good evening, diane. what a beautiful day it's been here today. and that's exactly why officials are essentially saying to people on cape cod, look, if you plan on leaving any time soon, today is the day to do it. the concern is that the weather and water conditions will only continue to go downhill. now, we actually got a chance to get out on the water today, and that's where you can really start to see earl's effects. normally, we're talking about two to four-foot waves. right now, they're almost twice that and we're expecting at least 20-foot waves by tomorrow night. when earl hits. now, many tourists, of course, hit the beach today, but they were not allowed to go swimming if they were on the ocean side of the beach. all of the beaches here are expected to be closed tomorrow.r and diane, the fear is that the water will simply be too rough and dangerous. >> okay, linsey, thanks to you. and our entire team will be standing by on the gulf -- on the coast, a